{"document":{"category":"csaf_vex","csaf_version":"2.1","notes":[{"category":"summary","text":"Palo Alto Networks PSIRT provided VEX document. This document is autogenerated.","title":"PAN-OS: Weak Cryptography Used in Web Interface Authentication"}],"publisher":{"category":"vendor","name":"Palo Alto Networks","namespace":"https://security.paloaltonetworks.com"},"title":"Palo Alto Networks PSIRT provided VEX document: CVE-2021-3047","distribution":{"text":"Copyright © 2024 Palo Alto Networks. All rights reserved.","tlp":{"label":"CLEAR","url":"https://www.first.org/tlp/"}},"tracking":{"current_release_date":"2026-03-11T22:39:02.005Z","generator":{"date":"2026-03-11T22:39:02.005Z","engine":{"name":"Vulnogram","version":"0.0.9"}},"id":"CVE-2021-3047","initial_release_date":"2021-08-11T16:00:00.000Z","revision_history":[{"number":"1","date":"2021-08-11T09:00:00.000Z","summary":"Initial publication"}],"status":"final","version":"1"}},"product_tree":{"branches":[{"name":"Palo Alto Networks","category":"vendor","branches":[]}]},"vulnerabilities":[{"cve":"CVE-2021-3047","product_status":{"fixed":["PANW-PAN-OS-306","PANW-PAN-OS-290","PANW-PAN-OS-307","PANW-PAN-OS-295"],"known_affected":["PANW-PAN-OS-306","PANW-PAN-OS-290","PANW-PAN-OS-307","PANW-PAN-OS-295"],"known_not_affected":["PANW-PAN-OS-271"]},"notes":[{"category":"description","text":"A cryptographically weak pseudo-random number generator (PRNG) is used during authentication to the Palo Alto Networks PAN-OS web interface. This enables an authenticated attacker, with the capability to observe their own authentication secrets over a long duration on the PAN-OS appliance, to impersonate another authenticated web interface administrator's session."}],"references":[{"category":"external","summary":"NVD - CVE-2021-3047","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3047"},{"category":"self","summary":"Palo Alto Networks Security Advisory CVE-2021-3047","url":"https://security.paloaltonetworks.com/CVE-2021-3047"}],"threats":[{"category":"impact","description":"A cryptographically weak pseudo-random number generator (PRNG) is used during authentication to the Palo Alto Networks PAN-OS web interface. This enables an authenticated attacker, with the capability to observe their own authentication secrets over a long duration on the PAN-OS appliance, to impersonate another authenticated web interface administrator's session."}],"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":4.2,"baseSeverity":"MEDIUM"},"products":["PANW-PAN-OS-306","PANW-PAN-OS-290","PANW-PAN-OS-307","PANW-PAN-OS-295"]}]}]}